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Family Cimbicidae - Cimbicid Sawflies

Cymbicid Sawfly larva Large wasp like bug - Cimbex americana Which Cimbicid Sawfly, please? - Abia Caterpillar - Cimbex americana Hymenoptera or mimic?  Ontario Canada - Cimbex americana Caterpillar ID - Abia Elm Sawfly - Cimbex americana Trichiosoma - Trichiosoma triangulum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Sawflies, Horntails, and Wood Wasps)
Family Cimbicidae (Cimbicid Sawflies)
Numbers
Nearctica.com lists 3 genera: Cimbex Olivier 1790 (4 spp.), Trichiosoma Leach 1817 (4 spp.), Zaraea Leach 1817 (4 spp.)
Arnett (1) and Insects of Cedar Creek lists 12 species.
Size
15-25 mm
Identification
Adults robust, resemble bumble bees. Base of abdomen broadly joined to thorax (no wasp waist). Antennae have seven or fewer segments, slightly clubbed.

Larvae eruciform (caterpillar-shaped, i.e., cylindrical, with well-devloped head and legs).
Life Cycle
Larvae typically feed on foliage of trees and shrubs. Hosts include: Cimbex--Elm (Ulmus), Zaraea--Honeysuckle (Lonicera), Trichiosoma--Cherry (Prunus).
Print References
Arnett, p. 542 (1)
Internet References
Univ. Florida--ENY 3005
North Carolina State University Entomology Collection lists Cimbex americana (6 pinned) and Trichiosoma triangulum (1 pinned).